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首页> 外文会议>55th International Astronautical Congress 2004 vol.13 >DEVELOPMENTS PROSPECTS OF SOLID PROPULSION SYSTEMS TO MEET FUTURE EELV REQUIREMENTS
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DEVELOPMENTS PROSPECTS OF SOLID PROPULSION SYSTEMS TO MEET FUTURE EELV REQUIREMENTS

机译：满足未来EELV要求的固体推进系统的发展前景

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RLVs face difficulties to prove their technological feasibility and their economical interest whereas expandable technologies are ready for use, and have some significant improvement potential for medium term launch systems. So, ELV prospective studies need to be carried out in parallel to RLV work before a choice is made for the next generation of European launchers. These studies have been gathered under a new initiative called ELV 2020 and coordinated by CNES that combines thoughts and propositions to obtain ELV concepts that could match RLV expected costs considering a 2020 timeframe. Within this framework, Snecma Propulsion Solide is working along with SNPE Materiaux Energetiques and CNES to evaluate potential future launcher architectures that could meet ELV 2020 ambitious requirements based on solid propulsion lower stages. The two most promising configurations are the following : 1. one big solid motor (500 metric tons propellant class) plus a high performance LOx/LH2 upper stage engine 2. several (3 to 10) small solid motors (from 40 to 150 metric tons propellant class) using specific ignition sequences plus a high performance LOx/LH2 upper stage engine This paper presents the different versions which have been investigated along with their respective performance and rank taking into account recurring cost too. Special attention is paid also to the technologies evolutions which are still possible to even improve the competitiveness of these solid motors.
机译：RLV难以证明其技术可行性和经济利益，而可扩展技术已准备就绪，可以使用，并且对于中期发射系统具有巨大的改进潜力。因此，在选择下一代欧洲发射器之前，必须与RLV工作同时进行ELV前瞻性研究。这些研究是在一项名为ELV 2020的新倡议下收集的，并由CNES协调，结合了思想和主张，以考虑2020年的时间框架，可以与RLV预期成本相匹配的ELV概念。在此框架内，斯奈克玛推进固体公司正在与SNPE Materiaux Energetiques和CNES一起评估潜在的未来发射器架构，这些架构可满足基于固体推进器较低阶段的ELV 2020雄心勃勃的要求。两种最有前景的配置如下：1.一台大型固体发动机（500公吨推进剂等级）加上高性能的LOx / LH2上级发动机2.数台（3至10台）小型固体发动机（40至150公吨）推进剂类别），使用特定的点火顺序以及高性能的LOx / LH2上级发动机。本文介绍了已研究的不同版本，以及它们各自的性能和等级，同时也考虑了循环成本。还特别关注技术发展，这些技术发展甚至有可能甚至提高这些固体电机的竞争力。

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